This is great news! We are talking about the same family. My dad said he thought the rest of the Ironside family had moved to London. George Ironside and Elizabeth Sinclair Morton moved to New York City --1886 for George and 1887 for Elizabeth and the children, Elizabeth Jane, Jane P. (Jennie), and John. (from census data).
Contact me directly at email@example.com so I can share a bit more. I do not have much on Scotland Ironsides but I wil share what I have. I have the Fyvie OPR microfilm on loan so I'll try to find more of the details there, too.